What is the Elastic potential energy of a car spring that has been stretched 0.5 meters? The spring constant for the car spring is 90 N/m.

Answer:

1.4

Explanation:

Answer:

The answer is 35.

Explanation:

We use the formula F=ma

Answer:

C.

Explanation:

Answer:

PLEASE BE MORE SPECIFIC

Explanation:

The pathfinder is currently 3.4 m away from its initial position. Speed can be defined by the change in position of the object over time.

What is Speed?

It can be defined by the change in position of the object over time. The distance can be calculated by the formula,

[tex]d = s \times t[/tex]

Where,

[tex]d[/tex]- distance

[tex]s[/tex] - speed

[tex]t[/tex] - times -

Initially, Pathfinder moves,

[tex]d = 0.2 \times 20 \\\\d = 4 \rm \ m[/tex]

Then he turns back and moves,

[tex]d' = 0.2 \times 3 = 0.6 \rm m[/tex]

So the current position is:

[tex]D = d - d'\\\\D = 4 - 0.6 \\\\D = 3.4\rm m[/tex]

Therefore, the pathfinder is currently 3.4 m away from its initial position.

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Answer:

[tex]A_2=0.74\ m^2[/tex]

Explanation:

Given that,

Weight, F₁ = 15,000 N

Area, A₁ = 10 m²

Weight, F₂ = 1100 N

We need to find the area of the small piston. The pressure exerted on both piston will be equal such that,

[tex]\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\\A_2=\dfrac{F_2A_1}{F_1}\\\\A_2=\dfrac{1100\times 10}{15000}\\\\A_2=0.74\ m^2[/tex]

So, the area of the smaller piston is [tex]0.74\ m^2[/tex].

Answer:

3,200,000,000 J

Explanation:

Work is defined as the amount of energy transferred as an object is moved a certain distance with a certain force. Mathematically, we express this with the equation

[tex]W=Fs[/tex]

where W is work (measured in joules), F is the force applied (in Newtons), and s is the distance, also called the displacement (in meters).

Here, we have F = 1,600,000 N and s = 2000 m, so our work will be

[tex]W=1.600.000(2.000)=3.200.000.000[/tex] J

Answer:

1. d. transverse waves

2. False

3. True

Answer:

8.333C 15F

Explanation:

15R in C - 0R in C = 8.3333C

15R in F - 0R in F = 15F

The man's resultant velocity is

8.5 m/s up .

Answer:

1 mol of any compound (including of course CO2 and O2) contains 6.022*10^23 molecules  

Therefore 0.5 mol of CO2 and O2 contains 3.01*10^23 molecules of each.

Answer:

Explanation:

In addition to the 'daughter' products, two or three neutrons also explode out of the fission reaction and these can then collide with other uranium nuclei which are unstable so these cause further fission reactions. This is known as a chain reaction .

Hope this helps

Answer:

the DTS triangle

Explanation:

DTS stands for distance, time, and speed, which you can use to calculate any of the three if you have the other two.

Answer:

v = 5.4 m/s

Explanation:

We use conservation of mechanical energy, that is all potential energy in the initial state, and all kinetic energy in the final state:

[tex]m*g*h=\frac{1}{2} m*v^2\\g*1.5=\frac{1}{2} v^2\\v^2=3*g=29.4\\v=\sqrt{29.4} \\v=5.42\,m/s[/tex]

which rounded to one decimal is

v = 5.4 m/s

(in agreement with the third answer on the list)

Answer:

9194.4278 seconds

Explanation:

Orbital period is given by :

T² = (4π²r³) /GM

G = Gravitational constant = 6.67 * 10^-11

M = 5.9801 * 10^24 kg

r = (3.110 * 10^6 m + 6378000 m) =3110000 + 6378000 = 9488000 m

T² = (4π² * 9488000^3) / (6.67* 10^-11 * 5.9801*10^24)

T² = 3.37197 * 10^22 / 398872670000000

T² = 84537504.161415

T = sqrt(84537504.161415)

T = 9194.4278 seconds

Answer:

The tourist's average speed was 80 mph

Explanation:

Average Speed

If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:

[tex]\displaystyle v=\frac{d}{t}[/tex]

The tourist leaves Pittsburgh and travels 60 miles South in 45 minutes. Then he heads West and travels 100 miles in 1 hour and 15 minutes.

The total distance traveled is:

d = 60 miles + 100 miles = 160 miles

The total time is:

t = 45 minutes + 1 hour + 15 minutes = 2 hours

The average speed is:

[tex]\displaystyle v=\frac{160}{2}[/tex]

v = 80 mph

The tourist's average speed was 80 mph

Answer:

D) 720 kmph

Explanation:

First, let's find what distance this aeroplane covered. Distance (d) is the product of speed and time - here, we have a speed of 240 kmph and a time of 5 hours, gives us

[tex]d=240\cdot5=1200[/tex] km

Using that same fact, we can set up a new equation to solve for speed (s) when we have a distance of 1200 km and a time of 1 2/3 hours. For the sake of cleanliness, I'm gonna rewrite 1 2/3 as the improper fraction 5/3:

[tex]1200=(5/3)s[/tex]

Multiplying both sides of the equation by 3/5:

[tex]s=(3/5)(1200)=720[/tex] kmph

So our answer is D.

Answer: 720km/h

Explanation:

Answer:

20&£+)##&843&()-_££-()&_2+0&&-£_!)

Answer:

b. The force is 6 times the original

Explanation:

Coulomb's Law

The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

[tex]\displaystyle F=k\frac{q_1q_2}{d^2}[/tex]

Where:

[tex]k=9\cdot 10^9\ N.m^2/c^2[/tex]

q1, q2 = the objects' charge

d= The distance between the objects

Suppose one of the charges is doubled, i.e., q1=2q1 and the other charge is tripled (q2'=3q2). The new force F' would be:

[tex]\displaystyle F'=k\frac{(2q_1)(3q_2)}{d^2}[/tex]

Operating:

[tex]\displaystyle F'=k\frac{6q_1q_2}{d^2}[/tex]

[tex]\displaystyle F'=6\cdot k\frac{q_1q_2}{d^2}[/tex]

Substituting the original value of the force:

[tex]F'=6\cdot F[/tex]

b. The force is 6 times the original

The electrostatic force between two electric charges will change by 18 times the original force if one charge is doubled and the second charge is tripled. Option c. is correct .

Coulomb's law is a basic principle of electromagnetism that describes how the electric charge exerts force on other charges. The force between two charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. When one charge is doubled and the other is tripled, the force between the two will be 18 times the original force. The electrostatic force between two electric charges is directly proportional to the product of the charges.

Therefore, when one charge is doubled and the second charge is tripled, the electrostatic force will be 18 times the original. Thus, the correct option is c. 18 times the original force.

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Answer:

Potential energy is the stored energy of position possessed by an object. In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity.

Explanation:

Answer:

Explanation:

10

Answer:

Force = 2.4  10^(-17) N

Explanation:

Recall that if you have the field, the force is easily obtained by multiplying E times the charge:

F = E * q = 150 * 1.6  10^(-19)  N = 240  * 10^(-19) N = 2.4  10^(-17) N

which agrees with answer C in your list of possible answers.

Correct question:

You have a transformer with 50 turns in the primary coil if you want to increase the voltage from 5V to 6V how many turns should be in the secondary coil ?

Answer:

the number of turns in the secondary coil is 60 turns.

Explanation:

Given;

number of turns in the primary coil, P = 50 turns

primary voltage, Ep = 5V

secondary voltage, Es = 6V

The number of turns in the secondary coil is calculated as;

[tex]\frac{N_s}{N_p} = \frac{E_s}{E_p} \\\\\frac{N_s}{50} = \frac{6}{5} \\\\N_s = \frac{50\times 6}{5} \\\\N_s = 60 \ turns[/tex]

Therefore, the number of turns in the secondary coil is 60 turns.

Answer:.05 kg*m over s

Explanation:did the work

Answer:

294.68

Explanation:

I hope you right answer

The velocity of light travelling in that medium = v= 107.9 m/s

It is a ratio of the velocity of light in vacuum to velocity of light in a specific medium

given

refractive index of material( u) : 2.78 * 10 ^6

c = 3* 10 ^8 m/s

velocity of light travelling in that medium(v) = ?

u = speed of light / v

v = speed of light / u

v= 3* 10 ^8 / 2.78 * 10 ^6

v= 107.9 m/s

velocity of light travelling in that medium = v= 107.9 m/s

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Answer:

(a) The list of angles based on amount of time in the air; 15° < 25° < 45° < 60°, < 80°

(b) The list of angles based on distance = 80° < 15° < 25° < 60° < 45°

Explanation:

(a) The given parameters are;

The angles in which the ball is thrown, θ = 45°, 15°, 60°, 25°, and 80°

The velocity with which the ball is thrown each time = The same velocity

The amount of time the projectile is in the air given as follows;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (\theta) }{g}[/tex]

Where;

t = Half the amount of time the projectile is in the air

θ = The angle of flight of the projectile

u = The initial velocity of the projectile = Constant for all angles in which the ball is thrown

g = The acceleration due to gravity = 9.8 m/s² = Constant

Therefore, we have;

When θ = 45°;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (45^ {\circ}) }{g} = \dfrac{2\cdot u \cdot \dfrac{\sqrt{2} }{2} }{g} = \dfrac{\sqrt{2} \cdot u }{g}[/tex]

When θ = 15°;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (15^ {\circ}) }{g} \approx \dfrac{0.517638\cdot u }{g}[/tex]

When θ = 60°;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (60^ {\circ}) }{g} = \dfrac{2\cdot u \cdot \dfrac{\sqrt{3} }{2} }{g} = \dfrac{\sqrt{3} \cdot u }{g}[/tex]

When θ = 25°;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (25^ {\circ}) }{g} = \dfrac{0.8452365\cdot u }{g}[/tex]

When θ = 80°;

[tex]2 \cdot t = \dfrac{2\cdot u \cdot sin (80^ {\circ}) }{g} = \dfrac{1.9696155\cdot u }{g}[/tex]

Therefore, the list of the angles based on the amount of time in the air from the shortest time to the longest time is given as follows;

List of angles based on amount of time in the air; 15° < 25° < 45° < 60°, < 80°

(b) The horizontal range, R is given as follows;

[tex]R = \dfrac{u^2 \cdot sin(2 \cdot \theta) }{g}[/tex]

When θ = 45°

[tex]R = \dfrac{u^2 \cdot sin(2 \times 45 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(90 ^{\circ}) }{g} = \dfrac{u^2 }{g}[/tex]

When θ = 15°

[tex]R = \dfrac{u^2 \cdot sin(2 \times 15 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(30 ^{\circ}) }{g} = \dfrac{1}{2} \cdot \dfrac{u^2 }{g} = 0.5 \cdot \dfrac{u^2 }{g}[/tex]

When θ = 60°;

[tex]R = \dfrac{u^2 \cdot sin(2 \times 60 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(120 ^{\circ}) }{g} = \dfrac{u^2 }{g} \cdot \dfrac{\sqrt{3} }{2} =0.866025 \cdot \dfrac{u^2 }{g}[/tex]

When θ = 25°;

[tex]R = \dfrac{u^2 \cdot sin(2 \times 25 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(50 ^{\circ}) }{g} = \dfrac{0.7660444 \cdot u^2 }{g}[/tex]

When θ = 80°

[tex]R = \dfrac{u^2 \cdot sin(2 \times 80 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(160 ^{\circ}) }{g} = \dfrac{0.34202 \cdot u^2 }{g}[/tex]

Therefore the list of angles based on the horizontal range the baseball travels from the shortest distance to the longest distance is given as follows;

List of angles based on distance = 80° < 15° < 25° < 60° < 45°.

Answer:

Explanation:

Mass = 50kg +7kg +4kg =61 kg

Velocity = 3m/s

Momentum = mass × velocity

[tex]p =61\times 3\\\\p =183MLT^-^1[/tex]

Answer:

Mass= 61 kg. Success to The homework.

Answer:

Hmm

Explanation:

Answer:

Are antioxidant-rich skincare products as effective as they say they are? Best Health checked the science behind the claims.

Rusting iron and the browning flesh of an avocado both have something in common with the discoloration, wrinkles and fine lines of our aging skin: oxidation. Antioxidants counter this natural aging process, and that’s why they have been taking top billing in skin care.

Explanation: